<?php

/**
 * LoginForm class.
 * LoginForm is the data structure for keeping
 * user login form data. It is used by the 'login' action of 'SiteController'.
 */
class LoginForm extends CFormModel
{
	public $username;
	public $password;
	public $rememberMe;

	private $_identity;

	/**
	 * Declares the validation rules.
	 * The rules state that username and password are required,
	 * and password needs to be authenticated.
	 */
	public function rules()
	{
		return array(
			// username and password are required
			array('username, password', 'required'),
			// rememberMe needs to be a boolean
			array('rememberMe', 'boolean'),
			// password needs to be authenticated
			array('password', 'authenticate'),
		);
	}

	/**
	 * Declares attribute labels.
	 */
	public function attributeLabels()
	{
		return array(
			'rememberMe'=>'Remember me next time',
		);
	}

	/**
	 * Authenticates the password.
	 * This is the 'authenticate' validator as declared in rules().
	 */
	public function authenticate($attribute,$params)
	{
		if(!$this->hasErrors())
		{
			$this->_identity=new UserIdentity($this->username,$this->password);
			if(!$this->_identity->authenticate())
				$this->addError('password','Incorrect username or password.');
		}
	}

	/**
	 * Logs in the user using the given username and password in the model.
	 * @return boolean whether login is successful
	 */
	public function login() {  
		if ($this->_identity === null) {  
			$this->_identity = new UserIdentity($this->username, $this->password);  
			$this->_identity->authenticate();  
		}  
		if ($this->_identity->errorCode === UserIdentity::ERROR_NONE) {  
			$duration = $this->rememberMe ? 3600 * 24 * 30 : 0; // 30 days  
			Yii::app()->user->login($this->_identity, $duration);  
	  
			$user = SysUser::model()->findByPk($this->_identity->id);  
			if ($user === null)  
				throw new CHttpException(404, 'The requested page does not exist.');  
			else {  
				// $user->lastlogintime = date("Y-m-d H:i:s");  
				// $user->lastloginfrom = $_SERVER['REMOTE_ADDR'];  
				// $user->save(false);  
				Controller::redirect(yii::app()->createURL(''));
			}  
			return true;  
		}  
		else  
			return false;  
	}  
}
